How is a bacteroid distinguished from a bacterial cell?
A) 16S rRNA gene sequencing
B) biochemical tests
C) cell morphology
D) 16S rRNA gene sequencing, biochemical tests, and cell morphology
Answer: C
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Which of the following strategies enable non-acidophilic bacteria to endure lower pH environments?
A. Proton pumps that pump H+ out of the cell B. All of the choices are correct. C. Presence of internal buffers D. Synthesis of acid shock proteins that protect other cellular proteins
Colorblindness is ____
a. more prevalent in females than males b. more prevalent in males than females c. present in both sexes equally d. encoded by genes on the Y chromosome e. not a genetic condition
What is one of the end products of photosynthesis?
a. Carbon dioxide b. Oxygen c. Water d. NADPH e. Sunlight
You are about to start a multiyear experiment in a laboratory that works with poliovirus. Although the chance of exposure is low, you are still required to get immunized. What type of immunity now protects you?
A) artificially acquired passive immunity B) artificially acquired active immunity C) naturally acquired passive immunity D) naturally acquired active immunity